We show how to synthesize a cw, single-frequency optical field from the frequency-dispersed, pulsed field of a mode-locked laser. This process, which relies on difference-frequency generation in an optical cavity, is efficient and can be considered as an optical rectification. Quantitative estimates for the output power and amplitude noise properties of a realistic system are given. Possible applications to optical frequency synthesis and optical metrology are discussed.
© 2005 Optical Society of America
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(140.4780) Lasers and laser optics : Optical resonators
(140.7090) Lasers and laser optics : Ultrafast lasers
(190.2620) Nonlinear optics : Harmonic generation and mixing
Lasers and Laser Optics
Gabriele Ferrari and Iacopo Carusotto, "Cavity-enhanced single-frequency synthesis via difference-frequency generation of mode-locked pulse trains," J. Opt. Soc. Am. B 22, 2115-2120 (2005)